Bozorgnejad, M., Khani, A., Pakzad, M., & Nodehi, S. "Effect of Lifestyle and Symptom Intensity Factors on the Severity of Lower Limbs Veins of Varicose Among Nurses in North Khorasan Hospitals, Iran", Journal of Patient Safety & Quality Improvement, 9, 4, 2021, 235-243. doi: 10.22038/psj.2021.60044.1337